DENDROLOGY

DENDROLOGY AND SOCIETY

PLANT CLASSIFICATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why do ferns need water?
A
to reproduce
B
to produce oxygen
C
to produce carbon dioxide
D
to relocate
Explanation: 

Detailed explanation-1: -The sperm needs to swim through water in order to get to the eggs. The eggs are housed or maintained in the gametophyte. And that dependence on water is why ferns are so often linked to wet habitats.

Detailed explanation-2: -Ferns do not flower but reproduce sexually from spores. There are two distinct stages of the fern life cycle. Mature plants produce spores on the underside of the leaves. When these germinate they grow into small heart-shaped plants known as prothalli.

Detailed explanation-3: -First, the gametophyte develops on the ground, where water can facilitate fertilization. Secondly, unlike mosses, the fern sporophyte has vascular tissue, which provides the support and transport system necessary to achieve substantial height.

There is 1 question to complete.